Nozzle



Aug.. 9, 1938. R. E. APTHoRP VNozzLE Filed April a, 195'? [m/eNZor.' W

Patented Aug. 9, 1938 alzano PATENT 'ori-ICE NOZZLE Robert E. Anthem, Milton, Mass. Application April 8, 1997, Serial No. 135,693

- 2 Claims.

This invention relates to nozzles and more particularly to nozzles in which a terminal member is seated in a cavity in the discharge head. In such nozzles, the cavity in the discharge head terminates in a conical bottom which serves as a seat to receive a conical surface on the terminal member. Grooves in one of the conical surfaces provide passages for fluid past the seating conical surfaces to a discharge orifice extending through the head from the apex of the conical bottom of the cavity.

An important consideration in the design of such nozzles is the provision of a construction which will permit and attain proper seating of the terminal member in the conical seat in the head. Various constructions have been proposed for attaining this objective hut none have been entireiy satisfactory. It is also important that the parts be designed to make possible the most accurate machining thereof.

In accordance with the present invention a 1 construction is provided such that as the parts are being assembled the terminal member is brought into engagement with its seat in the head and is rotated. At the same time the terminal member is supported so as to permit lateral and longitudinal self adjustment throughout its length. The construction is such that the parts of the nozzle may be assembled without tools and locked in position so they are not displaced in normal usage. Furthermore, the nozzle may be taken apart without the use of tools. In the most specific form 'of the nozzle, of the invention the long shank of the terminal member permits very accurate machining of the head.

The invention will be more clearly understood `from the following description in conjunction with the accompanying drawing, in which:

Fig. 1 is an elevational view of a nozzle embodying theI invention connected to a fitting forming part of the structure withl which it is to be used.

Fig. 2' is a detail sectional view of the nozzle, and

Fig. 3 is a detail view of the nozzle with the parts separated.

Before explaining in detail the present inven-4 tion it is to be understood that the invention is not limited in its application to the details of construction and arrangement of parts illustrated in the accompanying drawing, since the invention is capable of other embodiments and of being practiced or carried out in various Ways. Also it is to be understood thatthe phraseology or terminology employed herein is` for the purpose of description and not of limitation, and intended to limit the invention claimed herein beyondthe requirements of the prior art.

A nozzle embodying the invention is illustrated in the accompanying drawing and comprises a head I0 provided with a-threadedportion `Il to receive a fitting i2 forming part of the apparatus with which the nozzle is to be used. The head I0 .is provided with a cavity Iii terminating in a conical bottom it. A discharge orifice l5 extends from the apex of the conical bottom i4 through the head ifi. A terminal member I6 is positioned within the cavity i3 and is provided with a head having a cylindrical portion Il and a truncated conical portion it. The conical surface it is provided with grooves i9. The terminal member is providedwith a shank lit of reduced diameter extending from the cylindrical portion il of the head outside of the cavity it. The cavity i3 is large enough to permit lateral movement of the terminal member iii. 'The cavity i3 is provided with an internally threaded portion 22 adapted to receive thethreaded portion 2t of an elongated sleeve 24. The sleeve 24 is provided with a closure it at its outer end having a conical cavity 2t upon its inner face. A coil spring t'i is fitted within the sleeve tt so as to surround the shanl: l@ of the terminal member and provide clearance with both. One end of the spring ll engages the cavity iii audits other end engages a shoulder` iii adjacent the cylindrical portion i'i of the head. The shoulder itil may be provided with a plurality of nicks di for a purpose to be described hereinafter. The sleeve lll 'is provided with apertures t2 which are covered by a cylindrical wire mesh it is not screen 3d extending between the inner end tt of the head and an annular flange lib formed near the outer end of the sleeve 24.

The major portion of the spring 2l is housed within the sleeve it which serves as a guide for the spring and assists the latter in approximately positioning the conical surface i8 of the terminal member in its proper seating relation to the conical surface I4 in the head l0. In assembling the parts of the nozzle the terminal member i6 is first placed in the cavity I3 with the conical surface l engaging the conical surface il. The sleeve 24 having the spring il inserted therein is thenl threaded in the cavity i3. It will be noted that the spring 2i is at all times in engagement with the -shoulder 3i! and therefore tends to urge the conical surface i8 at all times in engagement with the conical surface ill. As the sleeve is threaded into the cavity the free end of the spring 21 tends to engage one of the nicks 3| in the shoulder 30 and consequently the terminal member il, spring 21 and sleeve Il tend to rotate in unison thereby facilitating proper seating of the surface I8 upon the surface I4. At the same time the terminal member I6 is free to move longitudinally and laterally and permit self-adjustment.

It will be noted that when the sleeve 24 has been threaded into the cavity the spring 21 tends to take up the play in the threaded connection between the sleeve 2l and cavity and thereby tends to oifer resistance to unscrewing of the sleeve. Likewise the free ends of the wire mesh screen 3l tend to bite into the end Il of the head and the annular flange l5 on the sleeve N and further tend to resist unscrewing of the sleeve 2l. The wire mesh screen 33 also tends to exert a resilient force tending to urge the sleeve 24 axially outward and in this respect acts similar to the coil spring 21. In this man-- vner the wire mesh sleeve 33 and the coil spring 20 tend to serve as a double lock preventing unscrewing of the sleeve 2| and consequent unseating of the terminal member i6. It will be further noted that the parts of the nozzle may be completely assembled and disassembled without the use of tools. Inasmuch as the terminal member projects outside of the cavity I3 it can be easily removed from the latter even if it should happen to stick. The elongated shank 20 tends to assist in aligning the terminal member so as to obtain proper seating thereof.

The head of the terminal member I6 including the cylindrical portion l1 and conical portion il should be as thin as the conical portion and the grooves I8 will permit in order to take advantage of the invention to the fullest extent. If, in assembling the parts, the terminal member is tilted, the spring 21 will exert pressure acting both transversely and longitudinally of the terminal member. This is particularly true if, as is generally the case, the spring is not absolutely straight. If the head of the terminal member is thin, the transverse pressure exerted by the spring 21 is practically negligible. On the other hand, if the head )is thick, theeil'ect of the transverse pressure exerted by the spring is very substantial and tends to tilt the terminal member and prevent proper seating thereof.

I claim:

l. A nozzle comprising a body having a cavity terminating in a conical bottom. said body having a discharge oriilce extending from said conical bottom. a terminal member with a head having a conical surface adapted to engage said conical bottom and having a shank extending from said head, the transverse dimension of said head being less than that ofl said cavity to permit lateral movement of said head and being greater than that of said shank to provide a shoulder, an apertured closure for said cavity threaded to said body, and a coil spring interposed between said shoulder and closure adapted. as said closure is threaded to said body, to hold said head yieldingly against said conical bottom and to transmit rotary movement to the terminal member and permit lateral a'nd longitudinal movement thereof thereby permitting proper seating of said head against said conical bottom.

2. A nozzle comprising a body having a cavity terminating in a conical bottom, said body having a discharge orifice extending from said conical bottom. a terminal member having a head with a conical surface adapted to engage said conical bottom and having a shank extending from said head, the transverse dimension of said head being less than that of said cavity to permit lateral movement of said head and being greater than that of said shank to provide a shoulder, a sleeve threaded to said body and having a radially inward extending portion at its outer end, a coil spring interposed between said sleeve and shank with one end engaging said shoulder and its other end engaging said radially extending portion of the sleeve, and means on said shoulder adapted to cooperate with said spring to transmit rotary movement to said head while permitting lateral and longitudinal movement thereof as said sleeve is threaded to said body. i

RBERT E. APTHORP. 

